The Development of the Chick An Introduction to Embryology
The book The Development of the Chick An Introduction to Embryology was written by author Frank Rattray Lillie Here you can read free online of The Development of the Chick An Introduction to Embryology book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Development of the Chick An Introduction to Embryology a good or bad book?
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166 shows a reconstruction of the nasal cavity, seen from the lateral side, of an embryo of about seven days. It is a re- construction of the epithelium, and thus practically a mold of the cavity; therefore projections into the cavity appear as depressions in the model, and the grooves and outgrowths of the external wall as projections. The superior turbinal has an oval shape with the long axis in an apical direction; it is bounded by a fairly deep depression, the elevated margin of the model, ...from the lower end of which the supra-orbital sinus (S. S'o. ) passes off ventrally and externally. The deep depression immediately below the superior turbinal lodges the median turbinal. A fairly long passage leads off from its neighborhood to the choanae and a shorter one, the vestibulum, to the external nares. The depression in the wall of the vestibulum is caused by the vestibular or inferior turbinal. The palatine and maxillary sinuses are not yet formed. The external nares are closed during the greater part of the period of incubation by apposition of their walls.
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